美国有线新闻 CNN 最新民调显示希拉里支持率领先特朗普 朝鲜再次试射潜射弹道导弹

play pause stop mute unmute max volume 00:0002:18repeat repeat off Update Required To play the media you will need to either update your browser to a recent version or update your Flash plugin. Now, it's time to talk politics. There's this little thi

VOA慢速英语2018--科学家称早期人类并不是想象中的那么简单

Scientists: Early Humans Were Not as Simple as One Would Think Scientists have discovered evidence that some of the earliest members of the human race, Homo sapiens, were surprisingly advanced. Scientists say these early humans knew how to use color

英语听力文摘 English Digest 569、为何有些狗身上有斑点？

Why Does Spot Have Spots? In dogs with multicolored coats, white areas have no pigment cells. Black, brown or yellow areas, on the other hand, get their color from special pigment cells. When a dog is just an embryo, these pigment cells travel from t

英语听力：自然百科 为何婴儿大多拥有蓝色眼睛？

Hi, its Kasey-Dee Gardner for Why? Tell Me Why? This week we received a question about baby eye color. The question was why are most babies born with blue eyes?. And I wasnt sure that was a true statement, but it is in fact a true statement. Actually

VOA标准英语2012--Sea Life Color Codes Food to Evade Danger

Sea Life Color Codes Food to Evade Danger The ocean glows with undersea life which makes its own light. These animals living on the ocean floor, beyond the reach of sunlight, have evolved this bioluminescence for camouflage, to find mates or to repel

VOA标准英语2011--Autumn Leaves Show Their True Colors

Autumn Leaves Show Their True Colors As days grow shorter and nights grow cooler in Boulder, Colorado, the green leaves of summer have been putting on party colors. On cottonwood trees and aspens, theyre golden yellow coins. On Mapleton Avenue, the m

VOA标准英语2011--Artist Uses Light to Enchant Museum Goer

Kinetic artist Carlos Cruz-Diez was born and raised in Caracas, Venezuela, but has spent half of his 87 years in Paris. There he developed a worldwide following for works that challenge how we see color. His illusion-filled pieces are now on display

VOA常速英语2014--英国研究人员开发信用卡更安全的加密措施

British Researchers Develop Safer Encryption for Credit Cards 英国研究人员开发信用卡更安全的加密措施 The recent news that data from 40 million credit and debit cards used at Target department stores was hacked has raised concerns a

美国国家公共电台 NPR Meet H.E.R., A Rising Voice Whose Face Remains A Mystery

MICHEL MARTIN, HOST: Now we'd like to talk with a breakout artist. She's won accolades from big names such as Alicia Keys and Wyclef Jean. Her debut EP H.E.R. Volume 1 shot to number one on the iTunes RB chart. But here's the twist, nobody knows who

英语听力：探索发现 2012-07-08 恐龙是怎样的炼成的—22

Going back, say, ten years ago, would you ever imagine that you would have been able to tell what colour any dinosaurs would have been? No, I mean I think at that time I would have said that its one of the things we will never know. And so we just fo

VOA标准英语2013--提高人们对铅中毒的意识

Raising Awareness of Lead Poisoning 提高人们对铅中毒的意识 The World Health Organization says lead poisoning has devastating health consequences, especially for children. The WHO is raising awareness about the problem during International

英语听力：自然百科 行星旅行指南：火星 Mars—15

If we have been wet, then we want to look for nutrients and food sources that could support microbes. The water ice is proof of a valuable resource for any life forms still clinging(附着) beneath the surface and for future travelers. We now know th

英语听力文摘 English Digest 151、当头发变白

Your teenage son wrecks the car. Your daughter shows up with her recently paroled boyfriend. These are the sorts of things that can make your hair turn gray overnight. Actually, it's impossible for hair to completely change color overnight. Hair colo